CN110218054A - A kind of nano clay modified high performance concrete and the preparation method and application thereof - Google Patents

A kind of nano clay modified high performance concrete and the preparation method and application thereof Download PDF

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Publication number
CN110218054A
CN110218054A CN201910532727.7A CN201910532727A CN110218054A CN 110218054 A CN110218054 A CN 110218054A CN 201910532727 A CN201910532727 A CN 201910532727A CN 110218054 A CN110218054 A CN 110218054A
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CN
China
Prior art keywords
performance concrete
nano clay
clay modified
water
parts
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Pending
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CN201910532727.7A
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Chinese (zh)
Inventor
朱绘美
宋强
张军
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201910532727.7A priority Critical patent/CN110218054A/en
Publication of CN110218054A publication Critical patent/CN110218054A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack

Abstract

The invention discloses a kind of nano clay modified high performance concretes and the preparation method and application thereof, belong to the field of building materials, the clay alteration high performance concrete raw material includes 100 parts of cement, 70~100 parts of mineral admixture, 1~6 part of nanoclay, 0.5~1.2 part of water-reducing agent, 1~3 part of fiber, 150~300 parts of fine aggregate, 340~480 parts of coarse aggregate, by cement, flyash, slag, silicon ash, nanoclay, fiber, coarse aggregate, fine aggregate is added blender and stirs 1-3min, then, water is added and water-reducing agent continues to stir 1-3min, it is uniformly mixed it, obtain nano clay modified high performance concrete, the nano clay modified high performance concrete improves the salt resistance halogen erosiveness for coagulating soil, harsh environment suitable for Salt Lake Area.

Description

A kind of nano clay modified high performance concrete and the preparation method and application thereof
Technical field
The present invention relates to building material technical field, more particularly to a kind of nano clay modified high performance concrete and its Preparation method and application.
Background technique
The salt lake region area in China account for about territory more than half, be concentrated mainly on one band of great Northwest and the Inner Mongol, from Each provinces and regions salt lake distribution sees that there is a salt lake more than 30 in Qinghai, and there is a salt lake more than 100 in Xinjiang, and there are a salt lake, the Inner Mongol more than 200 in Tibet There is a salt lake more than 300.The salt content of China's salt lake bittern is up to 5~10 times of seawater salt content, wherein Qinghai Salt Lake salt content For 340.51g/L, Salt Lake in Xinjiang salt content is 269.39g/L, and Tibetan Salt Lakes salt content is 195.45g/L, and Inner Mongol salt lake contains Salt amount is 278.96g/L, and mainly potassium, sodium, the sulfate of magnesium, villaumite and carbonate, to concrete and reinforced concrete The durability of structure constitutes a serious threat.
Therefore, a kind of concrete that durability is good need to be provided.
Summary of the invention
In view of the deficienciess of the prior art, the present invention comprehensively utilizes the filing effect of nanoclay, accelerates hydrated cementitious Response effect and volcano ash effect, by ratio optimization and preparation method research, prepare physical and mechanical property good stable, With good impermeability and erosion resistance performance and endurance quality, the high performance concrete for adapting to Salt Lake Area harsh environment.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of nano clay modified high performance concrete, including following raw material: cement, mineral admixture, Nanoclay, fiber, water-reducing agent, coarse aggregate and fine aggregate.
Preferably, a kind of nano clay modified high performance concrete, based on parts by weight, including following raw material: 100 parts of cement, 70~100 parts of mineral admixture, 1~6 part of nanoclay, 0.5~1.2 part of water-reducing agent, 1~3 part of fiber, thin bone 150~300 parts, 340~480 parts of coarse aggregate of material.
Preferably, the cement is the portland cement that strength grade is 52.5, and the fiber is polypropylene fibre.
Preferably, the mineral admixture is that specific surface area is not less than 350m2The S95 grade granulated blast-furnace slag of/kg, fineness II grade flyash and specific surface area no more than 45% are not less than 15000m2The mixture of the silicon ash of/kg, mass ratio are as follows: 2:2:1。
Preferably, the nanoclay is montmorillonite of the average grain diameter no more than 2 μm, kaolin, hectorite and silica It is one or more.
Preferably, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Preferably, the fine aggregate is river sand or Machine-made Sand.
Preferably, the coarse aggregate is the rubble of 5.0~31.5mm continuous grading.
The present invention also provides a kind of preparation methods of nano clay modified high performance concrete, comprising the following steps: by weight Part precise raw material is measured, weighed cement, flyash, slag, silicon ash, nanoclay, fiber, coarse aggregate, fine aggregate are added Enter blender stirring 1-3min, then, water is added and water-reducing agent continues to stir 1-3min, is uniformly mixed it, obtains nanometer Clay alteration high performance concrete.
Application the present invention also provides the nano clay modified high performance concrete in Salt Lake Area.
The environment of the Salt Lake Area is the brine that salinity is 124.05~527.15g/L, leading ion mine in brine Change degree range is (g/L): K+And Na+: 29.71~151.35, Ca2+: 1.01~23.32g/L, Mg2+: 2.51~48.72g/L, Cl-: 88.64~286.43g/L, SO4 2-: 2.10~17.08g/L, HCO3 -: 0.04~0.15g/L, CO3 2-: 0.02~0.1g/ L。
The invention discloses following technical effects:
The present invention utilizes the higher pozzolanic activity of nanometer metakaolin, promotes pozzolanic reaction and the generation of CSH gel, And its particle can form continuous grading with the mineral admixtures such as slag, flyash, silicon ash, filling concrete matrix micro-pore, To largely improve concrete density, alleviates destruction of the bittern erosion to concrete, successfully reached raising coagulation The purpose of the salt resistance halogen erosiveness of soil.
The present invention forms such as cement, mineral admixture, coarse aggregate, fine aggregate, and optimization by reasonably select material Material particle size combination improves the compression strength of concrete, while the addition of appropriate water-reducing agent improves the workability of concrete; Fiber forms 3 D stereo connection structure in concrete, so that the toughness of concrete significantly improves;By the way that nanoclay is added, Accelerate hydrated reaction of cement, and combine to form continuous particulate gradation with previous materials, the tiny hole inside fill concrete mentions The density of high concrete, the infiltration for reducing bittern solution destroy bittern caused by concrete.
Nano clay modified high performance concrete of the present invention has excellent salt resistance halogen erosion performance, can be significant Concrete is improved in the service life of Salt Lake Area.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.
Examples 1 to 3:
Raw materials and performance are as follows:
Cement: strength grade 52.5, portland cement, the production of certain cement plant.
Mineral admixture: S95 grades of slags, II grades of flyash are mixed with silicon ash according to weight ratio 2:2:1.
Nanoclay: maximum particle diameter is not more than 2 μm of nanometer metakaolin.
Fiber: length 50mm, the polypropylene fibre that 40 μm of diameter.
Water-reducing agent: QG-101 high-performance polycarboxylate dehydragent, water-reducing rate 35%.
Coarse aggregate: granite stones, 5~22.5mm of partial size crush coefficient 10.3, flat-elongated particles content 6%.
Fine aggregate: it is rinsed and is dried with tap water using preceding, contained by river sand, fineness modulus 2.64, sand in the area II Mud amount can be ignored with moisture content.
Water: tap water.
Concrete mix is as shown in table 1.
1 concrete mix of table
Cement Mineral admixture Nanoclay Fiber Coarse aggregate Fine aggregate Water-reducing agent Water
Embodiment 1 100 75 5 2.5 350 180 0.8 45
Embodiment 2 100 90 4 2.2 400 220 0.9 45
Embodiment 3 100 100 3 1.5 450 250 0.6 45
Comparative example 1 100 100 0 1.5 450 250 0.6 45
Comparative example 2 200 0 0 1.5 450 250 0.6 45
Comparative example 1-2:
In order to compare nanoclay and its influence with the compound action of mineral admixture to concrete performance, comparative example 1 In be not incorporated into nanoclay, be not incorporated into mineral admixture and nanoclay simultaneously in comparative example 2, other raw materials are the same as embodiment 1-3.
Mix and stir that steps are as follows: by weighed cement, flyash, slag, silicon ash, nanoclay, fiber, coarse aggregate, thin bone Material is added blender and stirs 1min, then, water is added and water-reducing agent continues to stir 2min, is uniformly mixed it, can discharge, so After reference block is made.
Salt Lake Environments are the brine that salinity is 124.05~527.15g/L, and leading ion salinity range is in brine (g/L): K+And Na+: 29.71~151.35, Ca2+: 1.01~23.32g/L, Mg2+: 2.51~48.72g/L, Cl-: 88.64~ 286.43g/L, SO4 2-: 2.10~17.08g/L, HCO3 -: 0.04~0.15g/L, CO3 2-: 0.02~0.1g/L.
Salt is carried out using " freezing method fastly " and freezes experiment: the concrete test block for conserving 56 days according to normal conditions is put into rubber box It is interior, bittern solution is injected, liquid level is higher than 1~2cm at the top of test block in keeping box, and the rubber box equipped with test block is then put into freeze thawing It in case, carries out salt and freezes experiment, thing mixing cycle is 4h, wherein the time for freezing and melting is not less than Frozen-thawed cycled process 1/4.100 times, 200 times and 300 times salt of test concrete freeze the compression strength after circulation respectively.
The concrete test block for conserving 56 days according to normal conditions is subjected to bittern-wetting-drying test.Circulation system is: room It is impregnated 16 hours in warm bittern solution, removal is dried 1 hour;It is put into 80 DEG C of baking ovens and dries 6 hours, it is 1 hour cooling, this It is recycled for one.The compression strength after 30 times, 50 times and 70 times bittern-drying and watering cycles of concrete is tested respectively.
The performance of corresponding match ratio is as shown in table 2.
The nano clay modified testing concrete performance result of table 2
By above embodiments as it can be seen that compared with comparative test, nano clay modified concrete proposed by the present invention initially resists Compressive Strength increased, and the compression strength after compression strength and bittern-freeze thawing after bittern-drying and watering cycle is even more obvious increase Add, there is good durability in bittern area.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention Various changes and improvements, should all fall into claims of the present invention determine protection scope in.

Claims (10)

1. a kind of nano clay modified high performance concrete, it is characterised in that: including following raw material: cement, is received mineral admixture Rice clay, fiber, water-reducing agent, coarse aggregate and fine aggregate.
2. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: with parts by weight Meter, including following raw material: 100 parts of cement, 70~100 parts of mineral admixture, 1~6 part of nanoclay, water-reducing agent 0.5~1.2 Part, 1~3 part of fiber, 150~300 parts of fine aggregate, 340~480 parts of coarse aggregate.
3. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the cement is strong The portland cement that grade is 52.5 is spent, the fiber is polypropylene fibre.
4. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the mineral blend Material is that specific surface area is not less than 350m2The S95 grade granulated blast-furnace slag of/kg, fineness are not more than 45% II grade flyash and ratio Surface area is not less than 15000m2The mixture of the silicon ash of/kg, mass ratio are as follows: 2:2:1.
5. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the nanoclay It is one or more no more than 2 μm of montmorillonite, kaolin, hectorite and silica for average grain diameter.
6. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the water-reducing agent is High-efficiency water-reducing agent of poly-carboxylic acid.
7. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the fine aggregate is River sand or Machine-made Sand.
8. a kind of nano clay modified high performance concrete according to claim 1, it is characterised in that: the coarse aggregate is The rubble of 5.0~31.5mm continuous grading.
9. a kind of a kind of described in any item preparation methods of nano clay modified high performance concrete of claim 1-8, special Sign is: the following steps are included:
Precise raw material by weight, by weighed cement, flyash, slag, silicon ash, nanoclay, fiber, coarse aggregate, Fine aggregate is added blender and stirs 1-3min, then, water is added and water-reducing agent continues to stir 1-3min, is uniformly mixed it, i.e., Nano clay modified high performance concrete is made.
10. nano clay modified high performance concrete described in claim 1 is in the application of Salt Lake Area.
CN201910532727.7A 2019-06-19 2019-06-19 A kind of nano clay modified high performance concrete and the preparation method and application thereof Pending CN110218054A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723918A (en) * 2019-10-15 2020-01-24 沈阳大学 Nano material for freeze-thaw resistant concrete and use method thereof
CN111675512A (en) * 2020-06-24 2020-09-18 南宁市嘉旺水泥制品有限公司 High-strength green concrete
CN112411297A (en) * 2020-12-01 2021-02-26 济南黄河路桥建设集团有限公司 Construction method of permeable cement pavement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2011134840A (en) * 2009-01-22 2013-02-27 Те Католик Юниверсити Ов Америка GEOPOLYMERIC COMPOSITE BINDERS WITH TASKED CHARACTERISTICS FOR CEMENT AND CONCRETE
US8603952B2 (en) * 2007-05-10 2013-12-10 Halliburton Energy Services, Inc. Cement compositions and methods utilizing nano-clay
CN105863147A (en) * 2016-04-01 2016-08-17 济南大学 Nano-modified high-durability concrete material and preparation method thereof
CN107032734A (en) * 2017-03-27 2017-08-11 浙江大学 A kind of preparation method of the high water-tight concrete of nano modification
CN108017345A (en) * 2017-12-08 2018-05-11 江苏苏博特新材料股份有限公司 A kind of ultrahigh-performance cement-based patching material and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8603952B2 (en) * 2007-05-10 2013-12-10 Halliburton Energy Services, Inc. Cement compositions and methods utilizing nano-clay
RU2011134840A (en) * 2009-01-22 2013-02-27 Те Католик Юниверсити Ов Америка GEOPOLYMERIC COMPOSITE BINDERS WITH TASKED CHARACTERISTICS FOR CEMENT AND CONCRETE
CN105863147A (en) * 2016-04-01 2016-08-17 济南大学 Nano-modified high-durability concrete material and preparation method thereof
CN107032734A (en) * 2017-03-27 2017-08-11 浙江大学 A kind of preparation method of the high water-tight concrete of nano modification
CN108017345A (en) * 2017-12-08 2018-05-11 江苏苏博特新材料股份有限公司 A kind of ultrahigh-performance cement-based patching material and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
刘玲: "《土木工程材料第2版》", 28 February 2018, 武汉大学出版社 *
叶启汉: "《纤维水泥制品行业论文选编1965-1999》", 30 June 2000, 中国建材工业出版社 *
郭爱云: "《混凝土工使用技术手册》", 31 January 2011, 华中科技大学出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723918A (en) * 2019-10-15 2020-01-24 沈阳大学 Nano material for freeze-thaw resistant concrete and use method thereof
CN111675512A (en) * 2020-06-24 2020-09-18 南宁市嘉旺水泥制品有限公司 High-strength green concrete
CN112411297A (en) * 2020-12-01 2021-02-26 济南黄河路桥建设集团有限公司 Construction method of permeable cement pavement

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